int insert_ROOT_in_stack(char * user_name,numStack_t * stack,MYSQL * mysql)
{
    char sql666[200]={0};
    sprintf(sql666,"select * from file_excel where path = '/'  and user_name = '%s' ;",user_name);
    int ret=mysql_query(mysql,sql666);
    MYSQL_RES *hhh = mysql_store_result(mysql);//得到查询结果                                     
    if(ret!=0)
    {
        printf("Error: %s\n", mysql_error(mysql));
        printf("用户cd的目标不存在\n");
        mysql_free_result(hhh);
        return -1;
    }
    MYSQL_ROW row=mysql_fetch_row(hhh);//取出查询结果的一行
    int will_in_stack=atoi(row[0]);
    pushStack(stack,will_in_stack);
    mysql_free_result(hhh);
    return 0;
}
